Drilling jig



FIG. 1 is a perspective view of a drilling jig showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is a second side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the drilling jig in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a drilling jig, as shown and described. 